Measurement of the tt¯tt¯ production cross-section using eμeμ events with b-tagged jets in pp collisions at s√s=13 TeV with the ATLAS detectorCitation formats

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Measurement of the tt¯tt¯ production cross-section using eμeμ events with b-tagged jets in pp collisions at s√s=13 TeV with the ATLAS detector. / ATLAS Collaboration .

In: Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 761, 16.08.2016, p. 136-157.

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ATLAS Collaboration 2016, 'Measurement of the tt¯tt¯ production cross-section using eμeμ events with b-tagged jets in pp collisions at s√s=13 TeV with the ATLAS detector' Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 761, pp. 136-157. https://doi.org/10.1016/j.physletb.2016.08.019

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ATLAS Collaboration . Measurement of the tt¯tt¯ production cross-section using eμeμ events with b-tagged jets in pp collisions at s√s=13 TeV with the ATLAS detector. Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics. 2016 Aug 16;761:136-157. https://doi.org/10.1016/j.physletb.2016.08.019

Author

ATLAS Collaboration . / Measurement of the tt¯tt¯ production cross-section using eμeμ events with b-tagged jets in pp collisions at s√s=13 TeV with the ATLAS detector. In: Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics. 2016 ; Vol. 761. pp. 136-157.

Bibtex

@article{a8f59ec15e44413d9b8f9e19d723bec1,
title = "Measurement of the tt¯tt¯ production cross-section using eμeμ events with b-tagged jets in pp collisions at s√s=13 TeV with the ATLAS detector",
abstract = "This paper describes a measurement of the inclusive top quark pair production cross-section (σtt¯) with a data sample of 3.2 fb¯1 of proton–proton collisions at a centre-of-mass energy of s√=13TeV , collected in 2015 by the ATLAS detector at the LHC. This measurement uses events with an opposite-charge electron–muon pair in the final state. Jets containing b-quarks are tagged using an algorithm based on track impact parameters and reconstructed secondary vertices. The numbers of events with exactly one and exactly two b -tagged jets are counted and used to determine simultaneously σtt¯ and the efficiency to reconstruct and b-tag a jet from a top quark decay, thereby minimising the associated systematic uncertainties. The cross-section is measured to be:σtt¯=818±8(stat)±27(syst)±19(lumi)±12(beam) pb, where the four uncertainties arise from data statistics, experimental and theoretical systematic effects, the integrated luminosity and the LHC beam energy, giving a total relative uncertainty of 4.4{\%}. The result is consistent with theoretical QCD calculations at next-to-next-to-leading order. A fiducial measurement corresponding to the experimental acceptance of the leptons is also presented.",
keywords = "hep-ex",
author = "Brian Cox and Stephen Watts and Terence Wyatt and {Da Via}, Cinzia and Joleen Pater and Andrew Pilkington and Darren Price and Alexander Oh and {ATLAS Collaboration}",
note = "20 pages plus author list (37 pages total), 4 figures, 4 tables, published version, all figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2015-09/",
year = "2016",
month = "8",
day = "16",
doi = "10.1016/j.physletb.2016.08.019",
language = "English",
volume = "761",
pages = "136--157",
journal = "Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier BV",

}

RIS

TY - JOUR

T1 - Measurement of the tt¯tt¯ production cross-section using eμeμ events with b-tagged jets in pp collisions at s√s=13 TeV with the ATLAS detector

AU - Cox, Brian

AU - Watts, Stephen

AU - Wyatt, Terence

AU - Da Via, Cinzia

AU - Pater, Joleen

AU - Pilkington, Andrew

AU - Price, Darren

AU - Oh, Alexander

AU - ATLAS Collaboration

N1 - 20 pages plus author list (37 pages total), 4 figures, 4 tables, published version, all figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2015-09/

PY - 2016/8/16

Y1 - 2016/8/16

N2 - This paper describes a measurement of the inclusive top quark pair production cross-section (σtt¯) with a data sample of 3.2 fb¯1 of proton–proton collisions at a centre-of-mass energy of s√=13TeV , collected in 2015 by the ATLAS detector at the LHC. This measurement uses events with an opposite-charge electron–muon pair in the final state. Jets containing b-quarks are tagged using an algorithm based on track impact parameters and reconstructed secondary vertices. The numbers of events with exactly one and exactly two b -tagged jets are counted and used to determine simultaneously σtt¯ and the efficiency to reconstruct and b-tag a jet from a top quark decay, thereby minimising the associated systematic uncertainties. The cross-section is measured to be:σtt¯=818±8(stat)±27(syst)±19(lumi)±12(beam) pb, where the four uncertainties arise from data statistics, experimental and theoretical systematic effects, the integrated luminosity and the LHC beam energy, giving a total relative uncertainty of 4.4%. The result is consistent with theoretical QCD calculations at next-to-next-to-leading order. A fiducial measurement corresponding to the experimental acceptance of the leptons is also presented.

AB - This paper describes a measurement of the inclusive top quark pair production cross-section (σtt¯) with a data sample of 3.2 fb¯1 of proton–proton collisions at a centre-of-mass energy of s√=13TeV , collected in 2015 by the ATLAS detector at the LHC. This measurement uses events with an opposite-charge electron–muon pair in the final state. Jets containing b-quarks are tagged using an algorithm based on track impact parameters and reconstructed secondary vertices. The numbers of events with exactly one and exactly two b -tagged jets are counted and used to determine simultaneously σtt¯ and the efficiency to reconstruct and b-tag a jet from a top quark decay, thereby minimising the associated systematic uncertainties. The cross-section is measured to be:σtt¯=818±8(stat)±27(syst)±19(lumi)±12(beam) pb, where the four uncertainties arise from data statistics, experimental and theoretical systematic effects, the integrated luminosity and the LHC beam energy, giving a total relative uncertainty of 4.4%. The result is consistent with theoretical QCD calculations at next-to-next-to-leading order. A fiducial measurement corresponding to the experimental acceptance of the leptons is also presented.

KW - hep-ex

U2 - 10.1016/j.physletb.2016.08.019

DO - 10.1016/j.physletb.2016.08.019

M3 - Article

VL - 761

SP - 136

EP - 157

JO - Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

ER -